FR2371382A1 - Amelioration dans la preparation du tripolyphosphate de sodium - Google Patents

Amelioration dans la preparation du tripolyphosphate de sodium

Info

Publication number
FR2371382A1
FR2371382A1 FR7734374A FR7734374A FR2371382A1 FR 2371382 A1 FR2371382 A1 FR 2371382A1 FR 7734374 A FR7734374 A FR 7734374A FR 7734374 A FR7734374 A FR 7734374A FR 2371382 A1 FR2371382 A1 FR 2371382A1
Authority
FR
France
Prior art keywords
degrees
neutralization
evaporation
precipitate
solution
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7734374A
Other languages
English (en)
French (fr)
Other versions
FR2371382B1 (es
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Euteco SpA
Original Assignee
Euteco SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Euteco SpA filed Critical Euteco SpA
Publication of FR2371382A1 publication Critical patent/FR2371382A1/fr
Application granted granted Critical
Publication of FR2371382B1 publication Critical patent/FR2371382B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B25/00—Phosphorus; Compounds thereof
    • C01B25/16—Oxyacids of phosphorus; Salts thereof
    • C01B25/26—Phosphates
    • C01B25/30—Alkali metal phosphates
    • C01B25/301—Preparation from liquid orthophosphoric acid or from an acid solution or suspension of orthophosphates
    • C01B25/303—Preparation from liquid orthophosphoric acid or from an acid solution or suspension of orthophosphates with elimination of impurities
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B25/00—Phosphorus; Compounds thereof
    • C01B25/16—Oxyacids of phosphorus; Salts thereof
    • C01B25/26—Phosphates
    • C01B25/38—Condensed phosphates
    • C01B25/40—Polyphosphates
    • C01B25/41—Polyphosphates of alkali metals
    • C01B25/412—Preparation from alkali metal orthophosphates
    • C01B25/416—Pure alkali metal polyphosphates from impure starting materials

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Battery Electrode And Active Subsutance (AREA)
FR7734374A 1976-11-19 1977-11-09 Amelioration dans la preparation du tripolyphosphate de sodium Granted FR2371382A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT29543/76A IT1125158B (it) 1976-11-19 1976-11-19 Miglioramenti nei procedimenti per la preparazione di tripolifosfato sodico

Publications (2)

Publication Number Publication Date
FR2371382A1 true FR2371382A1 (fr) 1978-06-16
FR2371382B1 FR2371382B1 (es) 1981-05-08

Family

ID=11227618

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7734374A Granted FR2371382A1 (fr) 1976-11-19 1977-11-09 Amelioration dans la preparation du tripolyphosphate de sodium

Country Status (8)

Country Link
US (1) US4146575A (es)
AU (1) AU501276B2 (es)
ES (1) ES464265A1 (es)
FR (1) FR2371382A1 (es)
GB (1) GB1590098A (es)
IN (1) IN146258B (es)
IT (1) IT1125158B (es)
ZA (1) ZA776558B (es)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3437686C2 (de) * 1984-10-15 1986-10-02 Hoechst Ag, 6230 Frankfurt Verfahren zur Reduktion von Metallionen in wäßrigen Lösungen
DE3437684C1 (de) * 1984-10-15 1986-06-05 Hoechst Ag, 6230 Frankfurt Verfahren zur Reduktion von Eisen und Vanadium in phosphorsaurer Lösung
DE3444975A1 (de) * 1984-12-10 1986-06-12 Hoechst Ag, 6230 Frankfurt Verfahren zur entarsenierung von phosphorsauren loesungen
US4676963A (en) * 1986-05-09 1987-06-30 Fmc Corporation Manufacture of sodium tripolyphosphate from wet acid

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1825965A (en) * 1928-07-14 1931-10-06 Bowker Chemical Company Production of disodium phosphate
US1998182A (en) * 1932-07-16 1935-04-16 Victor Chemical Works Production of di-sodium phosphate
US3081151A (en) * 1958-09-23 1963-03-12 Saint Gobain Manufacture of alkali orthophosphates
GB1104900A (en) * 1964-05-04 1968-03-06 Marchon Products Ltd Improvements in the manufacture of alkali metal phosphates
US3421846A (en) * 1965-06-07 1969-01-14 Hooker Chemical Corp Production of sodium phosphates

Also Published As

Publication number Publication date
AU501276B2 (en) 1979-06-14
GB1590098A (en) 1981-05-28
ZA776558B (en) 1978-08-30
US4146575A (en) 1979-03-27
ES464265A1 (es) 1978-08-01
IN146258B (es) 1979-04-07
IT1125158B (it) 1986-05-14
FR2371382B1 (es) 1981-05-08

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Legal Events

Date Code Title Description
ST Notification of lapse